Bypass vs Sleeve

I am going to a seminar on Saturday
I am not even considering the band. I have too much to lose.
I weigh 369 pds and am 5' 10ish BMI 52.4
I need to lose 200 lbs
What are your opinions Bypass or Sleeve
My thoughts are Sleeve as I keep reading there are less vitamin definciencies and less chance of dumping but I would like to hear from people who have them
I also need questions to ask and what to expect. Insurance only pays 4000 and need ideas of where to look for financial help with so so credit